diff --git a/ggml-metal.h b/ggml-metal.h
index 97d859f2c..790cf0bf7 100644
--- a/ggml-metal.h
+++ b/ggml-metal.h
@@ -35,7 +35,7 @@ struct ggml_cgraph;
 extern "C" {
 #endif
 
-void ggml_metal_log_set_callback(void (*log_callback)(enum ggml_log_level level, const char * text, void * user_data), void * user_data);
+void ggml_metal_log_set_callback(ggml_log_callback log_callback, void * user_data);
 
 struct ggml_metal_context;
 
diff --git a/ggml-metal.m b/ggml-metal.m
index df1bed000..919e51797 100644
--- a/ggml-metal.m
+++ b/ggml-metal.m
@@ -121,31 +121,31 @@ static NSString * const msl_library_source = @"see metal.metal";
 @implementation GGMLMetalClass
 @end
 
-void (*ggml_metal_log_callback)(enum ggml_log_level level, const char * text, void * user_data) = NULL;
+ggml_log_callback ggml_metal_log_callback = NULL;
 void *ggml_metal_log_user_data = NULL;
 
-void ggml_metal_log_set_callback(void (*log_callback)(enum ggml_log_level level, const char * text, void * user_data), void * user_data) {
-  ggml_metal_log_callback = log_callback;
-  ggml_metal_log_user_data = user_data;
+void ggml_metal_log_set_callback(ggml_log_callback log_callback, void * user_data) {
+    ggml_metal_log_callback = log_callback;
+    ggml_metal_log_user_data = user_data;
 }
 
 static void ggml_metal_log(enum ggml_log_level level, const char* format, ...){
-  if ( ggml_metal_log_callback != NULL ) {
-    va_list args;
-    va_start(args, format);
-    char buffer[128];
-    int len = vsnprintf(buffer, 128, format, args);
-    if (len < 128) {
-      ggml_metal_log_callback(level, buffer, ggml_metal_log_user_data);
-    } else {
-        char* buffer2 = malloc(len+1);
-        vsnprintf(buffer2, len+1, format, args);
-        buffer2[len] = 0;
-        ggml_metal_log_callback(level, buffer2, ggml_metal_log_user_data);
-        free(buffer2);
+    if ( ggml_metal_log_callback != NULL ) {
+        va_list args;
+        va_start(args, format);
+        char buffer[128];
+        int len = vsnprintf(buffer, 128, format, args);
+        if (len < 128) {
+            ggml_metal_log_callback(level, buffer, ggml_metal_log_user_data);
+        } else {
+            char* buffer2 = malloc(len+1);
+            vsnprintf(buffer2, len+1, format, args);
+            buffer2[len] = 0;
+            ggml_metal_log_callback(level, buffer2, ggml_metal_log_user_data);
+            free(buffer2);
+        }
+        va_end(args);
     }
-    va_end(args);
-  }
 }
 
 
diff --git a/ggml.h b/ggml.h
index 5753c70cf..266c91a84 100644
--- a/ggml.h
+++ b/ggml.h
@@ -1688,6 +1688,12 @@ extern "C" {
     };
 
     typedef void (*ggml_opt_callback)(void * data, float * sched);
+    // Signature for logging events
+    // Note that text includes the new line character at the end for most events.
+    // If your logging mechanism cannot handle that, check if the last character is '\n' and strip it
+    // if it exists.
+    // It might not exist for progress report where '.' is output repeatedly.
+    typedef void (*ggml_log_callback)(enum ggml_log_level level, const char * text, void * user_data);
 
     // optimization parameters
     //
diff --git a/llama.cpp b/llama.cpp
index ac1aa140d..9b12173be 100644
--- a/llama.cpp
+++ b/llama.cpp
@@ -886,7 +886,7 @@ static std::string llama_token_to_str(const struct llama_context * ctx, llama_to
 
 struct llama_state {
     // We save the log callback globally
-    llama_log_callback log_callback = llama_log_callback_default;
+    ggml_log_callback log_callback = llama_log_callback_default;
     void * log_callback_user_data = nullptr;
 };
 
@@ -6834,7 +6834,7 @@ const std::vector<std::pair<std::string, struct ggml_tensor *>>& llama_internal_
     return ctx->model.tensors_by_name;
 }
 
-void llama_log_set(llama_log_callback log_callback, void * user_data) {
+void llama_log_set(ggml_log_callback log_callback, void * user_data) {
     g_state.log_callback = log_callback ? log_callback : llama_log_callback_default;
     g_state.log_callback_user_data = user_data;
 }
diff --git a/llama.h b/llama.h
index ca5ee3a87..eba6aabfb 100644
--- a/llama.h
+++ b/llama.h
@@ -145,13 +145,6 @@ extern "C" {
         bool embedding;  // embedding mode only
     };
 
-    // Signature for logging events
-    // Note that text includes the new line character at the end for most events.
-    // If your logging mechanism cannot handle that, check if the last character is '\n' and strip it
-    // if it exists.
-    // It might not exist for progress report where '.' is output repeatedly.
-    typedef void (*llama_log_callback)(enum ggml_log_level level, const char * text, void * user_data);
-
     // model quantization parameters
     typedef struct llama_model_quantize_params {
         int nthread;                 // number of threads to use for quantizing, if <=0 will use std::thread::hardware_concurrency()
@@ -518,7 +511,7 @@ extern "C" {
 
     // Set callback for all future logging events.
     // If this is not called, or NULL is supplied, everything is output on stderr.
-    LLAMA_API void llama_log_set(llama_log_callback log_callback, void * user_data);
+    LLAMA_API void llama_log_set(ggml_log_callback log_callback, void * user_data);
 
     LLAMA_API void llama_dump_timing_info_yaml(FILE * stream, const struct llama_context * ctx);